Welcome to the FEST Fluent Assertions Module

FEST-Assert is a Java library that provides a fluent interface for writing assertions. Its main goal is to improve test code readability and make maintenance of tests easier.

FEST-Assert requires Java SE 5.0 or later and can be used with either JUnit or TestNG.

Currently, this module provides assertions for the following data types:

• Object
• String
• Collection
• Map
• Primitives (boolean, int, char, etc.)
• Arrays of Object
• Arrays of primitives
• BufferedImage
• Throwable
• File
• BigDecimal

It can be downloaded here. For Maven 2 users, details about the project's repository can be found at here.

Examples

int removed = employees.removeFired();
assertThat(removed).isZero();

List<Employee> newEmployees = employees.hired(TODAY);
assertThat(newEmployees).hasSize(6)
                        .contains(frodo, sam);

String[] newHires = employees.newHiresNames();
assertThat(newHires).containsOnly("Gandalf", "Arwen", "Gimli");

assertThat(yoda).isInstanceOf(Jedi.class)
                .isEqualTo(foundJedi)
                .isNotEqualTo(foundSith);